Dust separator for railway vehicles - Krapf & Lex: Home

Dust separator for
railway vehicles
completely out of
aluminum
compact
Description
self-cleaning
Dust absorbing up to
60%
Low maintenance
High dust rates in the inlet air in
railway vehicles can lead to
frequent maintenance rates of
downstream components or to
failures, due to contamination by
dust. Because of that either full
filters have to be changed often or
downstream components have to
be cleaned regularly to ensure a
failure-free operation of the
ventilation systems.
Pros and Cons of dust separators
Filtering
efficiency dust
Filtering
efficiency water
Price
Pressure loss
Standard
Ventilation
grille
The dust separator reduces the dust amount contained in the inlet air
by up to 60%.
The self-cleaning dust separator
for ventilation systems in railway
vehicles enables longer
maintenance rates and improves
service life times of the remaining
components (filters, ventilators,
controlling elements…) in the
ventilation system. Low pressure
drop and small installation size
simplify the use. The image
shows the dust separator on the
roof of
Dust separator
Ventilation grille
Multicyclone
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Standard ventilation grilles from Krapf & Lex do have a high filtering
efficiency of water and a relatively low filtering efficiency of dust. Dust
separator ventilation grilles do have a constant dust separation of up to
60 % and also absorb up to 95% of water.
Multi-cyclones reach up to 93% at an adequate pressure drop.
Date: 2010-11-11
the FLIRT Algier. There the
cooling air for the compressed air
production gets filtered. As well
the air supply for the driver’s cab
and for the air conditioning units
for the passengers in the FLIRT
Algier is equipped with the Krapf
& Lex dust separator.

Technical data
Pressure loss
pressure loss
200 Pa
150 Pa
100 Pa
50 Pa
loss
0 Pa
0 500 1000 1500 2000 2500 3000
Dust separation with all authorizations for railway vehicles
Our filters protect against …
air flow in m³/h
You receive Krapf & Lex dust
separator with:
Certificate of welding
Certificate of fire
prevention
proof of vibration test
In the past there were no
systems for the pre-separation
of dust adjusted to the branch.
Usually multi-cyclones which
have been originally developed
Ventilation grilles dust separator
feature a filtering efficiency of up
to 60% with dust particles bigger
10 µm. These data were
determined through
measurements by the university of
Amberg-Weiden.
Important pre-condition therefore
is the continuous exhaust of the
separated dust by a dust discharge
ventilator.
The air volume of the dust
discharge ventilator must amount
approx. from 10 up to 20% of the
total volume flow.
The ventilation grille optimized for
dust separation shows minor
pressure drops compared to
cyclone separators.
At 1000 m³/h the air speed
amounts approx. 2 m/s. The
optimal dimensioning range lies
between 3 m/s (approx. 1500
m³/h) and 4 m/s (approx. 2200
m³/h).
At 4 m/s the pressure drop lies at
approx. 120 Pa.
for the military- and commercial
vehicle sector were used. But
these systems do not have the
authorizations customary for the
railway industry.
Or standard ventilation grilles
have been used, which cannot
assure a continuous dust
separation.
Request our information about Krapf & Lex multicyclones!
… pressure shocks
… dust
… water
… snow
Pressather Str. 157
D - 92637 Weiden i. d. OPf.
Phone. + 49 (0)961 / 6 34 84 - 50
Fax. + 49 (0)961 / 6 34 84 – 54
e-mail contact@krapf-lex.de
www.krapf-lex.de